Stop mechanism for embroidering-machines.



J, A. GROEBLLQ STOP MECHANISM FOR EMBROIDERING MACHINES.

APPLIOATION FILED JAN. 25, 1907."

Patented Feb. 2, 1909.

3 SHEETS-SHEET 1.

- 5 Wm Moz J. A. GROEBLI. STOP MECHANISM FOR BMBROIDBRING MACHINES.

APPLIOATION FILED JAN. 25, 1907.

91 1,235. M Patented Feb. 2, 1909.

a SHEETS-SHEET a,

J. A. GROEBLI.

STOP MECHANISM FOR BMBROIDERING MACHINES.

APPLIOATION nun JAN. 25, 1901. 91 1,235.

Patented Feb. 2, 1909.

3 SHEETS-SHEET 3.

stror manners-1v: non srmnomnamenacmnns.

Toell whom it may concern:

Be it known that I, JOSEPH A. GROE'BLI, a.

citizen of the United States, residing at New other group of devices flexibly driven may be brought to rest romptly when such mech anism goes out ofaction. In a general way the mechanism which I have shown solely. by way of example in'the connecting .draw1ng,"relates in this particular instance.

generally to the mechanism' shown, described and claimed in U. S. Letters Patent No. 593,208, dated Nov. 9, 1897, for em: broidering machine.

he invention, broadly stated, consists'of means 'for bringing the actuating mechanism for effecting certain functions. in the embroidering machine promptly to rest, and is especially adapted for use and combination with such mechanism as may be flexibly drivcn, such,-for instance, as trains of gearing whose infirmities are well. known.

' The invention also consists of means for braking a driving mechanism where a dismechanism having several parts with play between them are employed for effecting the disconnection sense that I desire my claims also to be read.

In the drawingzFigurel is a plan view partly in section of a mechanism in which my inventionis embodied, showing the same in its initial position' Fig.2 is a sectional side elevation on line 2'-2 of Fig. 1, looking in the direction of the arrow: Fig. 3 is a transverse section on line 3-3 of Fig.1 looking in the direction of the arrow: Fig. 4 is a detail perspective side View of a hooked slide cooperating with the actuating arm to actuate and to restore certain movable parts. to position, also'showing another slide coo erating therewith to effect'the'brakin Fig. 5 isa detail side view of the hooked sli e shown in Fig. 4: Fig. 6 is a Fig. 7 is a side view of the other slide shown in Fig. 4: Fig. 8 is a Fig. 9 is ap] scale of part plan view of the same: an view. on av slightly enlarged of the mechanism shown inFig.

Specification of Letters Patent. application filed January 25,

' 9 looking in the direction of the arrow:

,one of the guides for the n pin.

which the lever and it is in this" 'M is adapted to be plan view of the same:

which slides are recesses as. 2, i909. ism. Serial n issaosa 1 illustrating the parts in their operating position: Fig. 10 is a transverse sectional elevation of some of the parts shown in Fig. 9 clearly showing the transmission train, the section being-taken on line l0-10 of Fig. 9

lookingin the direction of the arrow: Fig. 11

1s a sectional elevation on line 1l-l1 of 1g. 12 is'a perspective view of an operating piece foreii'ecting. the nnloclring or release of the. actuating bar from the brake arm Fig. 13 is a detail perspective'of the unlocking pins and brake actuating slide: and Fig. 14 is a detail perspective view of the nnlockingbarfor actuating thelockthe drawing wherever practicable I have lettered parts corresponding to parts in the Letters Patent hereinbefore referred to by the same reference letters as are used in the said patent.. a the drawing K indicates a multiple armed lever corresponding tothe lever. K in said patent... This lever aotuates and govern's the disconnecting mechanism for the.

needle mechanism of the embroidering machine, and the actuating and release mechanism for the brake arm. C'indicates the cam shaft of the machine having the cam C with K cooperates, being adapted to be rocked by the camslot c Mounted u on the shaft 0 is a bevel gear I) which meslibs with a bevel pinion E on the shaft F of the machine.

a gear G which meshes with a gear H on the cam-shaft I for the needle motion. This train of transmission gears constitutes in a sense a flexible drive due to ba'ok-lashand wear. Mounted on the shaft I is'a cam or wheel L against whose peri hery a brake shoe resse to brake the cam esame to rest romptly. The brake shoe is carried by a rake arm apivoted'at b to a bracket d on the main frame e-of the machine. This arm-a is of considerable length and its free end rests upon a s ring-support or ledge f. The long or wheel L to bring;

arm of t e brake arm a is adapted'to be.ac-

tuated in one direction to apply the brake by the following mechanism:

- The main operating or controlling mechanism for the rake arm a is a pair of slides g, 'i which work side by side in guides j and inclusive. The slide-g operates toapply the The shaft F carries in the cam 0 I shown'in detail in Figs. 4 to 8 functions is to uide theoperatin is integral with or supported by a plate j 'onbrake and may be described as follows, it be- 1 ing premised that the said slide is given a reciprocating operative movement to the left as shown in Figs. 9 and 10. The slide g has a bevel nose g and an abu tment or lug g which is adapted to come'against the brake arm a when the slide is moved forward, as 1 will be explained. The slide g is also provided with a stop g an abutment 9*, to eifect the. restoration of the slide, and an arm 9 for the attachment of a spring.

The slide i is provided with a nose 6. and a hook i adapted to cooperate with slide moving mechanism, such as the pin k on the arm k The slideI is also provided with a lateral guide-lug i and a lug i having a pini for the attachment of a spring. The slides g and i are connected by a stiff spring k.

The arm K receives its movement from an arm k forming part thereof which has a bowl or piece k which is entered into the cam-slotc in the cam C by the jacquard or otherwise at predetermined times and is, as aforesaid, part of the disconnecting mechanism for part of the sewing mechanism. arm or lmkk leads from the arm and. forms art of the adjusting for part of the embroidering mechanism,' The arm K is also provided with an o crating arm 1: having a cam k.- This cam 6 has a portion between the letters 0c-m which is concentric with the axis of the shaft carrying the arm K. The cam is bears against the nose i to actuate the slides g and i. Pin 15' on arm is takes behind the hook i to restore the slides to their initial positions.

, Pivoted at k to the arm k is an operating piece I havin a bowl or lugl bearing against a cam c on t e shaft C (see Figs. 10 and 12). The operating piece I is provided with an actuating or cam arm Z adapted to bear a ainst shoulders, lugs or ins m m on a re ease or unlocking bar at {bee Figs. 10 and 14)' to advance or withdraw the bar m. The operating iece is also provided with a stop arm 1* a apted to contact with a stop shoulder m and with a lug Z one of whose .piecelin its movement .contactmg wit the side of the stop shou der m The bar at moves in a guide at and is rovided with a rack m meshing with what in the present instance may be termed a guide pinion m in the guide m. The bar m-is provided with a lifting nose or cam m which is adapted to contact with the lower end of a pin m? (see Figs. 10, 11- and 13) which works,vertiea-lly in the guide 7' having a slotted shank 3' which the frame of the machine. The vertically movable pin m has" a lateral pin or abutment m upon which the slide g (for operating the brake arm or lever a) rests. (See Fig. 11.) For simplicity in illustration 1 have not slide g from t spring a shown in this casethe means for connecting and disconnecting the transmission gear, because that is fully shown and described in my Patent No. 593,208, hereinabove referred to. In that patent the arm K carries a lever which operates a connecting means and a rack and pinion arrangement is provided for initiating the movement of the ear D -As the construction there shown and described may be bodily used with the present invention it is believed that further reference to that device is unnecessary here. The detailed operation of the structure shown and described as constituting one form of construction in which my invention is embodied may be said to be as follows: Starting with the parts in the positions shown in Figs. 1, 2 and 3, entrance of the piece 15 on the arm k into the cam slot 0 in the cam G which may be effected from the jacquard or otherwise, as will be readily understood will cause the arm to swing to the left, Fig. 3, and the cam k thereon will ride against the nose 1? of the slidei thus moving said slide to the left carrying with it the slide g by reason of the stiff s )ring connection is between the slides 9 an i. This, as the movement continues, will, by the action of nose g of slide g rising on the brake lever 0., bring the lug or abutment g in contact with said brake arm a and a ply the brake M to the cam or wheel L on t 1e operating shaft I the disconnection of the transmission gear'having taken lace meantime through the action ofthe dhvice shown in my U. S. patent herein referred to. Continued forward movement of the arm k and slide g will 0 erate to supply the brake to the cam or w eel L by what is virtually a positive movement. This will bring the cam L and its connected parts to rest at once. The nose 1? now rests against the portion a:-:n of the cam k that is to say on a dead center. About this time the operating piece I will be brought into action to unlock the e brake lever to release the said brake lever and brake; the restoring of the brake lever a effecting the restoring action of said brake lever; This is done as follows: When the lever is has operated the slides g and i, the operating p ece I will be positioned for action. At this time the earn a will act upon said iece Z to swing it, the rotation of the shaft being so timed as to effect this result. During this time the nose i of slide 1'. will rest against the concentric portion ac:c of the lever k As the operating-piece Z swings on its pivot is its cam arm 1 bears against the shoulder m (see Figs. 10 and 14) of the unlocking bar m and causes its nose in to raise the pin m thereby raising the pin m (see Figs. 11 and 13) and lifting the slide g with its lug or abutment g (see Fig. 10) clear of the brake lever a which is thereupon restored to its initial position, see dotted and full lines in Fig. 9. The slides etc. are returned from their positions shown in Figs. 9, 10 and 11 to their initial positions shown in Figs. 1, 2, and 3. The slides 13 and g are restored thus. As the arm k executes a reverse swing the hook i on the slide 21 will be engaged by the pin k onthe arm k -and will travel with it engaging the abutment i on slide '5 behind the abutment g on slide 9 and retracting the slide 9. The operating piece'l will thereby also execute a reverse swing and act upon the abutmentm on the unlocking bar m to retract the said bar and thereby lower the pins in and m". The parts are now in the positions shown in Fig. 3 and are ready for another operation.

Having described my invention what I claim and desire to secure by Letters Patentis:

1. In an embroidering machine, the combination of main and supplemental means for driving a part of the embroideI'ingmachine, gears for transmitting 'ower fromthe main to the supplemental riving means, means for disconnecting the transmitting means from the main driving. means and a brake operating upon the su plemental drive and adapted to be actuated by the said disconnecting means.-

2. .In an embroidering machine, the combination of a main and'a supplemental driving means for a part of the embroidering machine, gears for transmitting power between said driving means, disconnecting mechanism therefor, and brake mechanism operat' ing on the supplemental drive and independ ent of the transmission gears and means for actuating said brake mechanism, initiated from the disconnecting mechanism.

3. In an embroidering machine the combination of main and supplemental means for driving a part of the embroidering machine, brake mechanism adapted to operate upon said supplemental drive and means whereby the power from said main drive \will operate to set the brake mechanism and means operated from the said main drive for releasing the said brake mechanism.

4. In an embroidering machine the combinaticn of a main and a supplemental drive for a part of the embroidering machine, means for transmitting power between said drives, brake mechanism adapted to operate on the supplemental drive, means operated by the main drive, adapted to disconnect said main and supplemental drives and adapted to set the said brake mechanismandmeans carried by said disconnecting means and operated from the said main drive, adapted to release said brake mechanism. a

5. In a stop motion for embroidering machines, the combination of a brake, a disconnecting mechanism for disconnecting part of the embroidering machine and an actuatthe reverse oscillation of said for connecting mechanism and the brake, and comprising in its structure a plurality of cooperating reciprocating slides one of which -1nterlocks with the brake mechanism and means for actuating the slides from the disconnecting mechanism,-and means for moving a slide'laterally to unlock or release the brake device.

6. In a stop motion for embroidering machines, the combination of a driving means, and a brake device therefor, an oscillating member adapted to disconnect apart of the driving means of the embroidering machine, means operated by said disconnecting means in one of its oscillations and adapted to operate said brake device and means operated by a part of the driving mechanism and adapted to release said brake device before disconnecting member.

7. In a stop motion for embroidering machines, the combination of a driving means and a brake .device therefor, an oscillating lever adapted to disconnect a part of the driving mechanism of the embroidering machine, reciprocating slides one of which is adapted to engage and operate said brake device, said slides being adapted to be re'-' ciproeated by said oscillating lever and means operated by a part of the driving mechanism adapted .to release said 0 eratingslide from the brake device before t 1e return of the said oscillating lever.

8. In a stop motion for embroidering machines, the combination of driving mechanism for part of the embroidering machine, a brake device, actuating mechanism therefor, a locking device engaging with the brake device, an o erating piece for operating to unlock said brake operating device, means for positioning said unlocking piece for operation and means operated by a part of the driving mechanism and adapted to operate said unlocking piece.

.9. In an embroidering machine, a driving mechanism, a brake mechanism therefor, actuating mechanism for the brake mechanism, unlocking mechanism for said brake operating device, common means for operating the said brake actuating mechanism and for positioning the said unlocking mechanism for operation and means for operating said unlocking mechanism.

10. In an' embroidering machine, a driving mechanism, a brake mechanism therefor, ac.- tuatlng mechanism for the brake mechanism, releasing mechanism'for said brake operating device, common means for operating the said brake actuating mechanism and for positioning the said releasing mechanism 0 eration and means operated by the said di'iving device for operating'said releasing mechanism.

11. In an embroidering machine, the combination of'main and supplemental means for driving; part of the embroiderlng ma- Cll1Il6,. means for transmitting power between'the said driving means, means operated by said main drive adapted to disconnect said main and supplemental drives and brake mechanism operating on said supplemental driving means.

12-. In an embroidering machine, the com bination of main and supplemental means for driving part of the embroidering machine, means for transmitting power between the said driving means, means operated by said main drive adapted to disconnect said main and supplemental drives, and brake mechanism operating on said supplemental driving means and adapted to be initiated from the said disconnecting mechanism.

13. In an embroidering machine, the combination of main and supplemental driving means for part of the embroidering machine, means for transmitting power between the said driving means, and. brake mechanism operating on said supplemental drive, and means whereby the said brake will receive its-operating action from the main driving means. i

14. In an embroidering machine, the combination of a normally operating main drive, a supplemental drive and means for transmitting power from the main to the supplemental drive, means operated by said main drive, and during the continuance oi" its op eration, adapted to disconnect said main and supplemental drives and a brake mechanism 0 erating on the sn 3 )lemental drive and agapted to be initiate by said disconnecting mechanism.

15. In an embroidering machine, the combination of a main. and a sup ilemental driving means for part of the eml roidering machine, means for transmitting power between the said driving means, means for disconnecting said drives, a brake mechanism operating on said. supplemental means whereby the said brake mechanism will receive its operating force from the main drive.

16. In an embroidering machine, the com bination of a main drive, means for transmitting power from the main drive to the emhroidering machine, mechanism operated by the main drive for disconnecting the power transmitting means and a brake mechanism initiated by the disconnecting mechanism and adapted to operate upon a part of the disconnected mechanism.

Signed. at New York, inthe county of New York, this 24th day of January 1907 JOSEPH A. GROEBLI.

Witnesses:

A. H. KUNnUnn, GEORGE E. Monsn.

drive and 

